with primary power available, is supplied by the reactive primary power supply; and means by which a very high proportion of the current required when any of the system's smoke alarms is in self-test mode is supplied by the smoke alarm battery as the DC voltage of the reactive primary pow...
Inside the UL test chamber, the smoke obscuration level at each smoke alarm location is monitored by a photocell light beam assembly mounted adjacent to the smoke detector test site, at a predetermined distance from the smoke source, defined by the UL test being conducted. The UL reference lig...
a在此期间进行实习 Carries on the practice[translate] ato remember to test your smoke alarm twice a year,make a habit of testing it when you turn your clocks forward in the spring and back in the fall 正在翻译,请等待... [translate]...
to increase protection with smoke alarms should be augmented with programs to insure adequate and timely testing and maintenance of existing smoke alarms.doi... CJ Thompson,AR Jones,MK Davis,... - 《Journal of Community Health》 被引量: 24发表: 2004年 Comprehensive Smoke Alarm Coverage in Lowe...
Testing methodological developments in the conduct of narrative synthesis: a demonstration review of research on the implementation of smoke alarm interven... 2007. “Testing Methodological Developments in the Conduct of Narrative Synthesis: A Demonstration Review of Research on the Implementation of ...
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A method for testing smoke sensor is to set a predetermined level for alarm generation on the basis of information on a first output of a main light receiving element for a stray light caused by an emitted light from a main light emitting element, a second output of an auxiliary light rece...
The present invention discloses improved smoke detector devices. In a preferred embodiment, the invention takes the form of an improved smoke detector of the type having a ceiling-mounted, main housing with an electrical circuit that includes an alarm device and a smoke sensing means that activates...
an alarm activating material confining housing; said emitter and said housing interconnected by a flexible conduit; and wherein said housing is adapted to substantially enclose said smoke or fire detector such that said alarm activating material is brought into contact with said smoke or fire ...
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